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package eSales.com.BL;

import eSales.com.BL.sales.LotsList;
import eSales.com.BL.utils.JaxbUtils;
import eSales.com.DAL.Lot;
import java.io.*;
import java.util.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.xml.sax.SAXException;

/**
 *
 * @author Home
 */
public class UploadServlet extends HttpServlet {

    private boolean isMultipart;
    private String filePath;
    private int maxFileSize = 50 * 1024;
    private int maxMemSize = 4 * 1024;
    private File file;

    @Override
    public void init() {
        // Get the file location where it would be stored.
        filePath = getServletContext().getInitParameter("file-upload");
    }

    @Override
    public void doPost(HttpServletRequest request,
            HttpServletResponse response)
            throws ServletException, java.io.IOException {
        // Check that we have a file upload request
        isMultipart = ServletFileUpload.isMultipartContent(request);
        response.setContentType("text/html");
        java.io.PrintWriter out = response.getWriter();
        if (!isMultipart) {
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet upload</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<p>No file uploaded</p>");
            out.println("</body>");
            out.println("</html>");
            return;
        }
        DiskFileItemFactory factory = new DiskFileItemFactory();
        // maximum size that will be stored in memory
        factory.setSizeThreshold(maxMemSize);
        // Location to save data that is larger than maxMemSize.
        factory.setRepository(new File("c:\\temp"));

        // Create a new file upload handler
        ServletFileUpload upload = new ServletFileUpload(factory);
        // maximum file size to be uploaded.
        upload.setSizeMax(maxFileSize);

        try {
            // Parse the request to get file items.
            List fileItems = upload.parseRequest(request);

            // Process the uploaded file items
            Iterator i = fileItems.iterator();

            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet upload</title>");
            out.println("</head>");
            out.println("<body>");
            filePath = System.getProperty("user.dir") + "\\";
            JaxbUtils.userHome = filePath;
            while (i.hasNext()) {
                FileItem fi = (FileItem) i.next();
                if (!fi.isFormField()) {
                    // Get the uploaded file parameters
                    String fieldName = fi.getFieldName();
                    String fileName = fi.getName();
                    String contentType = fi.getContentType();
                    boolean isInMemory = fi.isInMemory();
                    long sizeInBytes = fi.getSize();
                    // Write the file
                    if (fileName.lastIndexOf("\\") >= 0) {
                        file = new File(filePath
                                + fileName.substring(fileName.lastIndexOf("\\")));
                    } else {
                        file = new File(filePath
                                + fileName.substring(fileName.lastIndexOf("\\") + 1));
                    }
                    fi.write(file);
                    out.println("Uploaded Filename: " + fileName + "<br>");
                    updateDB(file);
                }
            }

            System.out.println("Bla!!!!");
            out.println("</body>");
            out.println("</html>");
            response.setHeader("Refresh", "5; URL=WelcomePage");
            //    response.sendRedirect("WelcomePage");
        } catch (Exception ex) {
            System.out.println(ex);
        }
    }

    public void doGet(HttpServletRequest request,
            HttpServletResponse response)
            throws ServletException, java.io.IOException {

        throw new ServletException("GET method used with "
                + getClass().getName() + ": POST method required.");
    }

    private void updateDB(File file) throws SAXException {
        LotsList lotsList = (LotsList) JaxbUtils.unmarshal(file.getPath(), null, LotsList.class);
        for (LotsList.SaleItem saleItem : lotsList.getSaleItem()) {
            Lot lot = new Lot(saleItem);
            lot.commit();
        }
    }
}
